78 THE NAUTILUS. 



Cassis nodulosa Gmelin. The example before me is remarkably 

 fine. There are 12 tubercles on the margin. 



Lotorium pilearis L. 



Natica lineata Lam. 



Natica chinensis Lam. 



Naticina papilla Gmel. 



CyprcRa clandestine/, L. 



Cyprcea cruenta coloba Melvill. 



Cyprcea erosa nebrites Melvill. Plate IV, fig. 9. 



Cyprcea erosa subalba, n. var. Plate IV, fig. 11. 



This beautiful new variety of erosa comes nearest to nebrites. It 

 differs from the latter in possessing milk white " specks " on a violet 

 white ground. The ocellations are not so persistent as in the var. 

 nebrites. The brown square spots, however, are similar. Type in 

 the writer's collection. 



Cyprcea erosa carmen n. var. PL IV, fig. 10. Sides much swollen, 

 pitted and furrowed above the callus on the left side. The base is 

 white, having none of the stippling of nebrites, and the squarish spot 

 at the side is nearly or quite covered by the basal callus. The back 

 is pale lilac-pink with traces of white spotting at the sides only. 

 Two cotypes measure 32 and 24 mm. long, in coll. A. N. S. P. 

 (No. 106457) and my own. 



Cyprcea errones L. 



Cyprcea felina ursellus Gmel. This variety may easily be 

 distinguished by the white base. 



Cypraen helvola L. PI. IV, fig. 8. 



Cyprcea helvola L. var. mascarena Melvill. Plate IV, fig. 6. 



Cyprcea Isabella, L. 



Cyprcea pantherina Sol. Among the series are the vars. theriaca 

 (one nearly black), albonitens and syringa. 



Cyprcea staphylcea L. This species has apprently not been 

 reported from Aden. 



Cyprcea stolida L. This new record extends the western range 

 beyond Ceylon. 



Cyprcza talpa L. 



Cyprcea tigris L. One individual is 4^ inches long. 



Cyprcea turdus Lk. The Aden shells are large. I have in my 

 collection three similar specimens which where taken at Muscat, 

 Arabia. This species reaches its greatest development in the Per- 



